片狀化石燃料的循環流化床燃燒(Ⅱ)——片狀顆粒在循環流化床的運行表現和片狀顆粒在密相區和稀相區的行為

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基金項目:

國家自然科學基金資助課題(No.50476082)

Combustion behavior of chip-like particles in a circulating fluidized bed boiler (Ⅱ): Effect of particle morphology on fluidization quality in dense and dilute phases

1. Mechanical Engineering School, University of Science and Technology Beijing, Beijing 100083, China;
2. Thermal Power Plant of Haoyu Company, Beijing 100083, China

摘要: 測試了燃燒京西無煙煤循環流化床鍋爐的實際運行參數,分析了顆粒度分布、球形度變化等特征對鍋爐運行的影響.研究了片狀無煙煤顆粒在循環流化床燃燒過程中的行為.研究表明,顆粒的片狀形貌對爐膛密相區和稀相區的顆粒度分布、平均懸浮密度分布有著重要影響,是造成爐膛溫度大幅度波動和揚析量大幅度波動的直接原因.
- 循環流化床 /
- 燃燒 /
- 鍋爐 /
- 無煙煤 /
- 顆粒形貌 /
- 揚析
Abstract: The effect of particle morphology on the operating parameters of a circulating fluidized bed boiler such as sphericity and size distribution in dense and dilute phases was analyzed, and the combustion behavior of chip-like anthracite was studied through the measured operating parameters. The results showed that particle morphology has huge impact on the average suspension density and partical size distribution in the dense bed and dilute bed of a furnance, and might be the direct reason of the flucluatons of furnace temperature and elutriation.
- circulating fluidized bed /
- combustion /
- boiler /
- anthracite /
- particle morphology /
- elutriation